योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-22, verse-40

तज्ज्ञा व्यवहरन्तीह भाव्यभावनवर्जितम् ।
अरूपालोकमननं मौनं दारुनरा इव ॥ ४० ॥

tajjñā vyavaharantīha bhāvyabhāvanavarjitam ,
arūpālokamananaṃ maunaṃ dārunarā iva 40

40. tat jñāḥ vyavaharanti iha bhāvya bhāvana varjitam
arūpa āloka mananam maunam dāru narāḥ iva

40. tat jñāḥ iha dāru narāḥ iva bhāvya bhāvana
varjitam arūpa āloka mananam maunam vyavaharanti

40. Those who truly know That (brahman/ātman) conduct themselves in this world, free from all objects of thought and imagination, their contemplation (dhyāna) formless and without specific perceptions, maintaining inner silence (mauna) like wooden figures.

Words meanings summery:

• तत् (tat) - the ultimate reality (brahman/ātman) (That, the ultimate reality)

• ज्ञाः (jñāḥ) - knowers of That (brahman/ātman) (knowers, those who know)

• व्यवहरन्ति (vyavaharanti) - they act, they conduct themselves, they deal

• इह (iha) - here, in this world, in this case

• भाव्यभावनवर्जितम् (bhāvyabhāvanavarjitam) - devoid of objects of thought and imagination/conception

• अरूपालोकमननम् (arūpālokamananam) - contemplation (dhyāna) that is formless and without specific perceptions (contemplation without form or perception)

• मौनम् (maunam) - inner silence (mauna) (silence, quietude, inner stillness)

• दारु (dāru) - wood, timber

• नराः (narāḥ) - men, human beings

• इव (iva) - like, as, as if

Words meanings and morphology

तत् (tat) - the ultimate reality (brahman/ātman) (That, the ultimate reality)

(pronoun)

Nominative, neuter, singular of tad

tad - that, it, this (often refers to Brahman, the Ultimate Reality)

Demonstrative pronoun, neuter nominative/accusative singular

ज्ञाः (jñāḥ) - knowers of That (brahman/ātman) (knowers, those who know)

(noun)

Nominative, masculine, plural of jñā

jñā - knowing, wise; a knower

From root jñā (to know)

Root: jñā (class 9)

व्यवहरन्ति (vyavaharanti) - they act, they conduct themselves, they deal

(verb)

3rd person , plural, active, present (laṭ) of vyavahṛ

Present indicative

Root hṛ (to seize, carry) with prefixes vi and ava.

Prefixes: vi+ava

Root: hṛ (class 1)

इह (iha) - here, in this world, in this case

(indeclinable)

भाव्यभावनवर्जितम् (bhāvyabhāvanavarjitam) - devoid of objects of thought and imagination/conception

(adjective)

Accusative, neuter, singular of bhāvyabhāvanavarjita

bhāvyabhāvanavarjita - devoid of (all) objects of thought/conception and the act of imagination/conceptualization

Compound of bhāvya (to be thought), bhāvana (thinking/imagination), and varjita (abandoned/devoid).

Compound type : tatpuruṣa (bhāvya+bhāvana+varjita)

• bhāvya – to be conceived, to be thought of, object of thought
  adjective
  Gerundive
  From root bhū (to be) in causative (bhāvayati)
  Root: bhū (class 1)
• bhāvana – imagination, conception, thought, feeling
  noun (neuter)
  From root bhū (to be) in causative (bhāvayati)
  Root: bhū (class 1)
• varjita – abandoned, devoid of, free from
  adjective
  Past Passive Participle
  From root vṛj (to avoid, abandon)
  Root: vṛj (class 1)

Note: Used adverbially here, modifying `vyavaharanti`.

अरूपालोकमननम् (arūpālokamananam) - contemplation (dhyāna) that is formless and without specific perceptions (contemplation without form or perception)

(noun)

Accusative, neuter, singular of arūpālokamanana

arūpālokamanana - contemplation whose nature is without form and without perception

Compound of arūpa (formless), āloka (perception), and manana (contemplation)

Compound type : bahuvrīhi (arūpa+āloka+manana)

• arūpa – formless, without shape
  adjective
  Negative compound (nañ-tatpuruṣa) of a (not) and rūpa (form)
• āloka – perception, sight, appearance
  noun (masculine)
  From root lok (to see) with prefix ā
  Prefix: ā
  Root: lok (class 10)
• manana – contemplation, reflection, thinking
  noun (neuter)
  From root man (to think)
  Root: man (class 4)

Note: Used adverbially here. Refers to the nature of `dhyāna`.

मौनम् (maunam) - inner silence (mauna) (silence, quietude, inner stillness)

(noun)

Accusative, neuter, singular of mauna

mauna - silence, quietude, inner stillness, non-speaking

From muni (sage, silent one)

Note: Used adverbially here.

दारु (dāru) - wood, timber

(noun)

neuter, singular of dāru

dāru - wood, timber

Note: Part of compound `dārunarāḥ`.

नराः (narāḥ) - men, human beings

(noun)

Nominative, masculine, plural of nara

nara - man, human being

Note: Part of compound `dārunarāḥ`.

इव (iva) - like, as, as if

(indeclinable)

Particle expressing comparison